Potato virus S (PVS) is a plant
pathogenic virus. It was first reported in Netherlands. PVS causes mild or no symptoms in most potato varieties. It is common in potatoes in many regions and does not cause significant yield losses. Field-grown potatoes are not routinely screened for this virus because it is not considered economically important. However, PVS often present in mixed infections with
other potato viruses, which may accentuate symptom severity.
Genome and Phylogeny
The single-stranded, positive-sense RNA genome of PVS is approximately 8.5 kb in length and enclosed in its filamentous particle. This genome consists of a 5′ cap structure and an
open reading frame
In molecular biology, open reading frames (ORFs) are defined as spans of DNA sequence between the start and stop codons. Usually, this is considered within a studied region of a prokaryotic DNA sequence, where only one of the six possible readin ...
(ORF) encoding an
RNA-dependent RNA polymerase (RdRp), the triple gene-block proteins (TGBp1-3) involved in virus cell-to-cell movement, a NABP (cysteine-rich nucleic-acid-binding protein), and 34 kDa
coat protein (CP). Phylogenetic analysis using non-recombinant sequences of the (i) 95 CP; and (ii) 130 complete ORF, RdRp, and TGB sequences from GenBank, found that the global isolates were positioned within three main phylogroups: PVSI, PVSII or PVSIII.
See also
*
Viral diseases of potato
Viral diseases of potato are a group of diseases caused by different types of viruses that affect potato crops worldwide and, although they do not affect human or animal health since they are viruses that only infect vegetables, they are a source o ...
References
External links
ICTVdB - The Universal Virus Database: Potato virus S
Carlaviruses
Viral plant pathogens and diseases
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